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Commit 996ff52f authored by Sreelakshmi Gownipalli's avatar Sreelakshmi Gownipalli Committed by Gerrit - the friendly Code Review server
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diag: Reset the usb read buffer in case of error 



Reset the usb read buffer in case of error and don't queue
read work if error is EIO.

Change-Id: I633c850445818c4f94a9300a4b3939233b4cd076
Signed-off-by: default avatarSreelakshmi Gownipalli <sgownipa@codeaurora.org>
parent 159dc458

drivers/char/diag/diag_usb.c

+3 −2
Original line number Original line Diff line number Diff line
@@ -286,10 +286,11 @@ static void usb_read_work_fn(struct work_struct *work) 
		req->buf = ch->read_buf;

		req->buf = ch->read_buf;

		req->length = USB_MAX_OUT_BUF;

		req->length = USB_MAX_OUT_BUF;

		err = usb_diag_read(ch->hdl, req);

		err = usb_diag_read(ch->hdl, req);

		if (err && err != -EIO) {

		if (err) {

			pr_debug("diag: In %s, error in reading from USB %s, err: %d\n",

			pr_debug("diag: In %s, error in reading from USB %s, err: %d\n",

				 __func__, ch->name, err);

				 __func__, ch->name, err);

			atomic_set(&ch->read_pending, 0);

			atomic_set(&ch->read_pending, 0);

			if (err != -EIO)

				queue_work(ch->usb_wq, &(ch->read_work));

				queue_work(ch->usb_wq, &(ch->read_work));

		}

		}

	} else {

	} else {